What tooltip text should I give to controls that move a map?

Question

The application is a 3D map of a large work area (several rooms), with information tabs at the bottom. Users can rotate and zoom the map, click on a room for details, click a piece of equipment for specs, manuals, etc.

At the top of the screen are arrows to move the map around and a zoom slider. I'd like to add tooltips to those navigation buttons to make sure their function is understood. Tooltip text for the slider is pretty obvious: Zoom In on the plus sign, Zoom Out on the minus sign, "Slide to Zoom" on the slider itself. But I'm not sure what should go on the arrows.

What I'm currently leaning toward is: Move Map Up, Move Map Down, Move Map Right, and Move Map Left on the appropriate arrows. ("Map" might be redundant, but I want to differentiate between moving the map and changing your perspective relative to the map.)

Do these make sense? Is there a more concise or clearer phrasing I could use?

Answer 1

Design the buttons in such a way that tooltips are almost superfluous. Then my suggestion to name the tooltips would be: scroll up, scroll right, scroll down, scroll left.

You're not really moving the map, you're just scrolling through it.

Answer 2

I'd set a single tooltip for the whole set of navigation artifacts, communicating something like "set of tools to move and rotate the map [help button hith details]".
As of the individual controls, I'd do what Bart said: obvious albeit concise labels.

There is another consideration: tooltips tend to get in the way of what the user is trying to point at, especially for slower users.
Accounting for this, I'd set the tooltip to not appear any more after it showed one or two times.